opCmp, [partial/total/pre]orders, custom floating point types etc.

[Fool via Digitalmars-d]

On Tuesday, 12 January 2016 at 19:46:47 UTC, John Colvin wrote:
> On Tuesday, 12 January 2016 at 19:44:18 UTC, Fool wrote:
>> Non-reflexive '<=' does not make any sense at all.
>
> It might be a bit of a mess, agreed, but nonetheless:
>
> assert(!(float.nan <= float.nan));

Agreed, but in case of float '<=' is not an order at all.